Native American Turquoise Serpent Pendant

Native American Turquoise Serpent Pendant. Length 1 ¼" from base to top of necklace loop, width a little over 1", like new condition, sterling silver, 2 Turquoise stones, serpent with Turquoise eyes, signed/stamped on the back with: Y. Horse #313, Effie C Zuni, purchased in New Mexico near the Arizona border, does not come with a chain.